Solar panelsTemperature controlHeat regulationIdeal body temperatureFuzzy raptorScientists cannot agree whether dinosaurs were coldblooded or warm-blooded. Cold-blooded animals, such as reptiles,…
MIGRATING REINDEERLONG JOURNEY HOMELONG-DISTANCE NAVIGATIONMONARCH MARATHONDORMANCYFIND OUT MOREAnimals have many instinctive behaviours that are linked to climate. Seasonal changes trigger…
DECANTING GOLDDISTILLATIONFILTRATIONCHROMATOGRAPHYFIND OUT MOREThe substances in a mixture are separated by the differences in their physical properties, such as their particle size. The more…
Putting Up a FrontWeatherOn Another FrontMass AppealPutting Up a FrontFrontal AttackStorms on the FrontTelling What's Next What happens when two different air masses meet? You get a front. The…
BULLARD, Henry Adams, a Representative from Louisiana; born in Pepperell, Mass., September 9, 1788; was graduated from Harvard University in 1807; studied law in Boston and Philadelphia; was…
COMMON PARTICLESMINERAL MIXTURESPARTICLE SIZESOLUTIONSFIND OUT MOREAlmost everything is made of different substances mixed together. Things are only easy to recognize as mixtures if the PARTICLE…
The Great New England HurricaneWeatherBlowing Cold and Hot: The Big OnesWinter Gone SouthBig-City SnowsStorm of the Century?The Greatest One of AllModern Winter of Deep SnowsGalveston Storm SurgeThe…
(Encyclopedia) Lord's Supper, Protestant rite commemorating the Last Supper. In the Reformation the leaders generally rejected the traditional belief in the sacrament as a sacrifice and as an…
(Encyclopedia) tektitetektitetĕktīt [key], naturally occurring, silica-rich (65%–80% SiO2) glass resembling obsidian and sometimes shale, and is normally jet black to olive green. They appear as…
